Usually thin to thick tabular {001}, bounded by {210} alone or in combination with {101}, {011} or other forms. Also flattened {001}, and elongated to prismatic [010] or [100]. More rarely prismatic [001], or equant. Often as aggregates or clusters of tabular crystals with edges projecting into crest-like forms, or as rosettes. Also found as massive material, compact, laminated or concretionary; and in fibrous, stalactic, and earthy masses.

A Pb2+-rich (plumboan) variety of baryte deposited by very acid hot springs. Generally also contains minor strontium and minute traces or radium, making recently deposited hokutolite mildly radioactive (although this disappears in a few decades and is no ...

A "variety" of baryte containing trace amounts of radium. The activity of 226Ra in the material from Ohře Rift area, Czech Republic, may reach 8 Bq/g. Scaly precipitates on oil industry equipment may show the radioactivity as high as 103 Bq/g.

Carruthers, R.G., Eastwood, T., Wilson, G.V., Pocock, R.W., and Wray, D.A. (1915) Barytes and witherite. Special Report of the Mineral Resources of Great Britain vol. 2, Memoirs of the Geological Survey of Great Britain.

Showing 63 significant localities out of 12,048 recorded on mindat.org.

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All localities listed without proper references should be considered as questionable.